Add Invidious (#435)

* Create Invidious

* Prettify invidious

* Replaced 'latest' with sha tag

public/v4/apps/invidious.yml

@@ -0,0 +1,58 @@
+captainVersion: 4
+services:
+    $$cap_appname-db:
+        image: postgres:$$db_version
+        restart: always
+        volumes:
+            - $$cap_appname-data:/var/lib/postgresql/data
+        environment:
+            POSTGRES_DB: invidious
+            POSTGRES_PASSWORD: kemal
+            POSTGRES_USER: kemal
+        healthcheck:
+            test: ['CMD', 'pg_isready', '-U', 'postgres']
+        caproverExtra:
+            notExposeAsWebApp: 'true'
+    $$cap_appname:
+        image: omarroth/invidious$$cap_version
+        restart: always
+        environment:
+            # Adapted from ./config/config.yml
+            INVIDIOUS_CONFIG: |
+                channel_threads: 1
+                check_tables: true
+                feed_threads: 1
+                db:
+                  user: kemal
+                  password: kemal
+                  host: srv-captain--$$cap_appname-db
+                  port: 5432
+                  dbname: invidious
+                full_refresh: false
+                https_only: false
+                domain:
+        caproverExtra:
+            containerHttpPort: '3000'
+
+caproverOneClickApp:
+    variables:
+        - id: '$$cap_version'
+          label: Invidious Version
+          defaultValue: '@sha256:31d0c0061778fecc98b693c8d53073e5ac758b1d570ac2881370547079fa2a4c'
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/omarroth/invidious/tags. If you want to use the latest tag (or a versioned release, if available), start with a colon (e.g. :latest).
+          validRegex: "/^([^\\s^\\/])+$/"
+        - id: '$$db_version'
+          label: Postgres Version
+          defaultValue: '10' # there is no other tag provided
+          description: Check out their Docker page for the valid tags https://hub.docker.com/_/postgres?tab=tags
+          validRegex: "/^([^\\s^\\/])+$/"
+    instructions:
+        start: |-
+            Invidious is an alternative front-end to YouTube. 
+            More details: https://github.com/iv-org/invidious
+        end: |-
+            Invidious has been successfully deployed! It may take a couple of minutes until the web frontend can be reached.
+    displayName: Invidious
+    isOfficial: true
+    description: Invidious is an alternative front-end to YouTube.
+    documentation: See https://github.com/iv-org/invidious